PSEB 9th Class Science Solutions Chapter 13 Why Do we Fall Ill

Punjab State Board PSEB 9th Class Science Book Solutions Chapter 13 Why Do we Fall Ill Textbook Exercise Questions and Answers.

PSEB Solutions for Class 9 Science Chapter 13 Why Do we Fall Ill

PSEB 9th Class Science Guide Why Do we Fall Ill Textbook Questions and Answers

Question 1.
How many times were you ill in the last one year? What were the illnesses?
(a) Think of one change you could make in your habits in order to avoid any of / most of the above illnesses.
(b) Think of one change you would wish for in your surroundings in order to avoid any of / most of the above illnesses.
Answer:
(a) Change inhabit. Twice-Influenza and diarrhoea

1. Avoid contact with infected person.
2. Drinking clean water.
3. Consume healthy nourishing food.

(b) Change in surroundings. Cleanliness, proper disposal of household wastes.

Question 2.
A doctor/nurse/health worker is exposed to more sick people than others in the community. Find out how she avoids getting sick herself.
Answer:
To reduce incidence of infectious diseases following steps are taken:

1. Prevention of infection by avoiding exposure.
2. Immunisation.
3. Wear gloves and masks.
4. Take prophylactic medicines.

Question 3.
Conduct a survey in your neighbourhood to find out what the three most common diseases are. Suggest three steps that could be taken by your local authorities to bring down the incidence of these diseases.
Answer:
The common diseases are:

1. Loose motions
2. Cough and cold
3. Malarial fever

Preventive measures:

1. Reduce the effects of infectious disease.
2. Public cleanliness is important for individual health. Kill the cause of disease by using medicine that kill microbes.
3. Providing immunisation to all the people.
4. Use of clean drinking water.

Question 4.
A baby is not able to tell her/his caretakers that she /he is sick. What would help us to find out:
(a) that the baby is sick?
(b) what is the sickness?
Answer:
(a) Signs of disease.

1. Baby keeps crying.
2. Body of baby feels hot.
3. Eyes start watering.
4. Cough.
5. Loose motions.
6. Vomiting.

(b) Sickness: The manifestation of disease results in sickness.
Doctor conducts some tests and from the symptoms he establishes the sickness.

Question 5.
Under which of the following conditions is a person most likely to fall sick?
(a) when she is recovering from malaria.
(b) whe she has recovered from malaria and is taking care of someone suffering from chickenpox.
(c) when she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chickenpox. Why?
Answer:
When a person is on four days fast after recovering from malaria and is taking care of someone suffering from chickenpox is likely to fall sick because of lack of food. Organ systems such as liver have not recovered properly. A person will get infected with chickenpox as the defence system is also affected during malaria.

Question 6.
Under which of the following conditions are you most likely to fall sick?
(a) when you are taking examinations.
(b) when you have travelled by bus and train for two days.
(c) when your friend is suffering from measles. Why?
Answer:
A person is likely to fall sick when his friend is suffering from measles. It is an infectious and contagious disease. The infection is through droplets.

Science Guide for Class 9 PSEB Why Do we Fall Ill InText Questions and Answers

Question 1.
State any two conditions essential for good health.
Answer:
The conditions essential for good health
1. Proper nutrition or balanced diet and one should be disease free.
2. Social equality and harmony are necessary for individual good heaLh.

Question 2.
State any two conditions essential for being free of disease.
Answer:
Disease means uncomfortable. The discomfort may be due to a particular cause. Disease is any condition which interferes with the normal functioning of bod) and impairs the health. The conditions essential for being free of disease are:
1. Proper diet.
2. Good habits such as avoiding habit-forming substances and adopting dean and healthy sexual life.

Question 3.
Are the answers to the above questions same or different? Why?
Answer:
Different. It is possible to be in poor health without actually suffering from a particular disease. This is particularly true of social and mental health, where we can be in poor health without there being a cause in the form of an actual disease. This is the reason why, when we think about health, we think about societies and communities. On the other hand, when we think about disease, we think about individual sufferers.

But otherwise, there is one similarity. If the conditions which are essential for good health are maintained then there are no chances of getting a disease.

Question 4.
List any three reasons why would you think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor? Why or why not?
Answer:
In case there is a disease, either tire functioning or the appearance of one or more systems of the body will change or get worse. These changes give rise to symptoms or signs of disease.

Symptoms of disease:
1. Fever
2. Loss of appetite with feeling of nausea and vomiting.
3. Loose motions.
Doctors will look for signs of disease on the basis of symptoms. Sign will provide definite indication of the presence of a particular disease.

Question 5.
In which of the following case do you think the long-term effects on your health are likely to be most unpleasant?
(a) if you get jaundice.
(b) If you get lice.
(c) if you get acne
Answer:
(a) Jaundice is a chronic disease; it will have very drastic long term effect on people’s health as compared to getting affected by lice or appearance of acne. Jaundice may have fatal effect on body.

Question 6.
Why are we normally advised to take balanced and nourishing food when we are sick?
Answer:
(a) Nourishing food is good for health and simple food is easy to digest.
(b) Such a diet contains adequate nutrients for speedy recovery.

Question 7.
What are the different means by which infectious diseases are spread?
Answer:
Communicable diseases are spread by microbial disease causing agents. The different agents are air, water, food droplets, sexual act, casual physical contacts or through vectors.

Question 8.
What precautions could you take in your school to reduce the incidence of infectious diseases?
Answer:
A. General methods
(a) The general ways of preventing infections mostly relate to preventing exposures.
(b) Availability of proper or sufficient food for everyone.
(c) Drinking soft potable water.

B. Specific ways
Immunisation.

Question 9.
What is immunisation?
Answer:
Immunisation: Process or procedure of making a person immune to a disease by artificial method.

Question 10.
What are the immunisation programmes available at the nearest health centre in your locality? Which of these are the major health problems in your area?
Answer:
(a) The vaccines against tetanus, diphtheria, whooping cough, measles, polio are available at primary health centre. These form public health programme of childhood immunisation.
(b) Diphtheria and whooping cough are major health problems.